However, we still have about 100 conversions left to go. In order to expedite the removal of the old routing system, the core and routing system maintainers have agreed to shift to a two-step conversion process.

Why not continue on as we have been?

The advantage of the two-step process is that we can do step 1 for every module very quickly, and work on removing the Drupal 7 routing system so we can uncover and resolve critical issues with the new routing system as soon as possible. Step 2 requires more work and more careful technical review, and can continue after the old routing system is removed.

What about conversion patches that are already in progress?

Many routing conversions already have had a lot of work put into them. We will continue to review and commit these patches until September 14, 2013. At that point, the outstanding work should be split into two patches, one to commit that includes step 1 above, and a separate followup patch that includes any work for step 2 on the issue to date. While this will require some minor work to reroll existing patches into two separate patches, it will allow us to move forward with critical efforts at DrupalCon Prague.